I think that chasing your dreams is one of the most important thing that you can do in your life, but not many people do. This is mostly due to the fact that they are afraid of failure but, if they never take a chance how do they know what may or may not happen? However, that is not always the case, sometimes the person doesn't have someone around them to support their dreams and believe in them. While I do believe that it is very important for us to believe in ourselves, it doesn't hurt to have a good support group believing in you too.
I think that it is important to take every opportunity that is presented to you, because you may never get it again. Although, at the time you may be thinking, "But what if this happens?" or "What if that happens?" and you let that discourage you. Well, "What if it doesn't?" I also realized that it the "what ifs" in life that come to kill our dreams or at least throw us off course.